Richard Burton in his first film The Last Days of Dolwyn in 1949

Fflics will include some of the most "significant British films" from the first half of the 20th Century.

Richard Burton's first film, and a newly restored version of How Green Was My Valley and The Life Story of David Lloyd George are on the programme.

The National Library of Wales will jointly host the event next month.

It will include a restored print of the 1941 film about a south Wales mining community, How Green Was My Valley, which has been loaned by the Academy of Motion Picture Arts and Sciences, which produces the Oscars.

FESTIVAL HIGHLIGHTS The Life and Death of Colonel Blimp How Green Was My Valley (1941) The Life Story of David Lloyd George (1918) The Last Days of Dolwyn (1949) Y Chwarelwr (1935) The Stars Look Down (1939) Blue Scar (1949) The Life and Death of Colonel Blimp (1943) Your classic favourites

Film expert Dave Berry, said the programme included "some of the most significant British films" of the early 20th Century.

Among them, The Life Story of David Lloyd George was an "epic" he said.

A silent movie, it was lost for 76 years until it was re-discovered in 1994 and restored by the Aberystwyth library.

"It's two-and-a-half hours long, had 10,000 extras in one scene and 2,000 in another," said Mr Berry.

"It was made in 1918, but it was dropped and there was a veil of secrecy surrounding it.

"There are theories that the then Prime Minister Lloyd George had cold feet as a general election was due at the end of 1918 and that's why it was never shown."

Norman Page in The Life Story of David Lloyd George from 1918

Mr Berry said The Last Days of Dolwyn, starring a young Richard Burton in his first film role, would also be shown.

"Burton was awkward in the film because he played a Welshman who could not speak English very well," he added.

"He was by no means the finished article when this film was made in 1949."

John Reed, film preservation officer at the national library, said Y Chwarelwr (Quarrymen), the first Welsh-language sound drama from 1935, was another important film being shown.

He also recommended Blue Scar, directed by Jill Craigie, the wife of former Labour leader and Ebbw Vale MP Michael Foot.

Fflics is part of celebrations marking the national library's 100th anniversary and starts on 25 October. Some films will also be shown at Aberystwyth Arts Centre.